You can build a Striker that will have an Accutrigger. The trick is that you need to get you hands on an undesignated action. I believe that you can order one direct from Savage. The other option is to contact Jim Briggs at Northland Shooters Supply:
Contact Information for NSS:
E-mail - briggs.j-b@q.com (that is Q.com not G.com)
Phone - 763/682-4296
Fax - 763/682-6098
Mailing address:
PO Box 333
Buffalo, MN 55313
He has undesignated Target actions available. In order to use the Accutrigger, you need to use a rear grip stock instead of the center grip that came on the factory Strikers. Then you just need to add the barrel of your choice. From what I've heard, you'd have a hard time building one for less than $1000. It would probably be easier to just buy a Striker and replace the factory stock with an aftermarket rear grip stock, and add an after market trigger.
FWIW, I just got my hands on a Striker in 300 WSM and was worried about the trigger. With a little time, I managed to adjust it to a rreasonable level without modifying anything, just using the built in adjustments.
Andrew